So asks ESPN:

The former first-round pick was splitting reps at left guard with Stefen Wisniewski, but that experiment appears to be over as Warmack was inactive against Washington on Monday night. The Eagles need some tackle depth with Jason Peters lost for the season. Warmack is viewed as an interior lineman only. If there is a guard-needy team out there that happens to have a spare swing tackle, perhaps a deal can get done:

http://www.espn.com/nfl/insider/story/_/page/32for32x171024/nfl-trade-deadline-2017-potential-targets-every-team